<template>
  <div>
    <!-- 导航栏 -->
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles" :key="index" class="title-item"
          :class="{active: index === currentIndex}" @click="titleClick(index)">
          {{item}}
        </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";
export default {
  name: 'DetailNavBar',
  components: {
    NavBar
  },
  data () {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  methods: {
    titleClick (index) {
      this.currentIndex = index;
      this.$emit('titleClick', index);
    },
    backClick () {
      this.$router.back();
    }
  }
}
</script>

<style scoped>
.back img {
  width: 20px;
  /* height: 10px;/ */
  margin-top: 14px;
  margin-left: 14px;
}

.title {
  display: flex;
  font-size: 14px;
}
.title-item {
  flex: 1;
}
.active {
  color: var(--color-high-text);
}
</style>
